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Sir William Ellis (1609–1680) was an English lawyer, judge and politician who sat in the House of Commons at various times between 1640 and 1679, and supported the Parliamentary cause in the English Civil War.


Ellis was second son of Sir Thomas Ellis of Grantham, Lincolnshire. He was educated at Christ's College, Cambridge, graduating B.A. in 1627.[1] Having entered Gray's Inn on 6 November 1627 he was called to the bar on 9 February 1634. He represented Boston, Lincolnshire, in the Short parliament of 1640, and also in the Long parliament.[2]

After Pride's Purge Ellis was readmitted to the House of Commons on 4 June 1649. On 24 May 1654 he was appointed solicitor-general. Shortly afterwards he was elected an ancient of his inn. As solicitor-general he took part in the prosecution of those involved in the Gerard's conspiracy: John Gerard, Peter Vowell, and Summerset Fox on the charge of corresponding with Charles Stuart and conspiring to assassinate the Lord Protector Oliver Cromwell. The trial took place in June 1654. Gerard and Vowell pleaded innocent. They were convicted and sentenced to death. Gerard was beheaded and Vowell was hanged (Fox pleaded guilty and was sentenced to transportation).[2][3]

The same year Ellis was again returned to Parliament for Boston, and in 1656 for Grantham. He was a member of the committee appointed to frame statutes for Durham College in March 1656. In June 1658 he was engaged in the prosecution of John Hewett and John Mordaunt, charged with levying war against the Protector. Hewett was found guilty and Mordaunt acquitted.[2] He was created a baronet by the Lord Protector Oliver Cromwell on or soon after 31 May 1658. The baronetcy passed into oblivion at the Restoration in May 1660 and unlike some others was not renewed.[4]

Ellis continued in the office of solicitor-general under the second Lord Protector Richard Cromwell. At the election in January 1658-9 for the Third Protectorate Parliament he retained his seat for Grantham. In the debate on the competency of the Scottish members he spoke at length in support of their claims (18 March 1659).[2]

Re-elected for Grantham in 1660, Ellis was excluded from the house on the score of his opinions. In autumn 1664 he was appointed reader at Gray's Inn, of which he had been elected a bencher in 1659; on 26 August 1669 he took the degree of serjeant-at-law, and on 10 April 1671 he was advanced to the rank of king's Serjeant and knighted. He was raised to the bench in 1673, taking his seat in the Court of Common Pleas on the first day of Hilary term. The only case of public interest which came before him was that of Barnardiston v. Swaine, an election case. Ellis was removed in 1676, without reason assigned, but reinstated on 5 May 1679, having been returned to parliament for Boston in the preceding February. He sat as one of the judges at the last of the major Popish Plot trials, when Lionel Anderson and six other Catholic priests were tried on the capital charge of acting as priests in England, contrary to the statute of 1585. In contrast to previous Plot trials, the proceedings were conducted in a courteous and civlised fashion, and though the priests were found guilty and sentenced to death, they were all reprieved.

He died on 3 December 1680 at his chambers in Serjeants' Inn.[2][5]


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  1. ^ "D.N.B. is wrong in making him M.A. at Caius." .mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .id-lock-free a,.mw-parser-output .citation .cs1-lock-free a{background:linear-gradient(transparent,transparent),url("//")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited a,.mw-parser-output .id-lock-registration a,.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:linear-gradient(transparent,transparent),url("//")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription a,.mw-parser-output .citation .cs1-lock-subscription a{background:linear-gradient(transparent,transparent),url("//")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:linear-gradient(transparent,transparent),url("//")right 0.1em center/12px no-repeat}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}"Ellis, William (ELS623W)". A Cambridge Alumni Database. University of Cambridge.
  2. ^ a b c d e Rigg 1889, p. 295.
  3. ^ Mills 2011.
  4. ^ Cokayne 1903, p. 6.
  5. ^ According to Sir Thomas Ray Raymond, "grandaevus senectute, viz. aetat. 71." His arms are emblazoned in the bay window of Gray's Inn Hall (Rigg 1889, p. 296).


Parliament of England
Preceded by
Parliament suspended since 1629
Member of Parliament for Boston
With: Sir Anthony Irby 1640–1648
Succeeded by
Not represented in Barebones Parliament
Preceded by
Not represented in Barebones Parliament
Member of Parliament for Boston
Succeeded by
Sir Anthony Irby
Preceded by
William Bury
Member of Parliament for Grantham
With: Thomas Skipwith 1659
Not represented in the restored Rump Parliament
Preceded by
Sir Anthony Irby
Francis Mussenden
Member of Parliament for Boston
With: Sir Anthony Irby 1660
Succeeded by
Sir Anthony Irby
Thomas Hatcher

2 Annotations

San Diego Sarah  •  Link

William Ellis MP was one of 22 Fire Court judges, responsible for sorting out the legal entanglements for the rebuilding of London. The process lasted 10 years, and the judges to their great credit refused all fees. Because of their work, London was largely rebuilt in that time. For more info., see… for the Fire Courts, and his Parliamentary bio at…

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Chart showing the number of references in each month of the diary’s entries.


  • Feb